data encryption(The process of converting readable data (plaintext) into a coded form (ciphertext) to prevent it from being read by an unauthorized party)
encrypted data(Data that has been converted from plaintext into ciphertext. Encrypted messages are used to disguise the content of a message when it is sent or stored)
Data Encryption Standard(An encryption algorithm that uses a 56-bit key and maps a 64-bit input block to a 64-bit output block. The key appears to be a 64-bit key, but one bit in each of the eight bytes is used for odd parity, resulting in 56 bits of usable key)